After turning in an impressive season premiere last night, the cast and crew of Gotham look to keep the ball rolling with next week’s episode, “A Dark Knight: The Fear Reaper.” From that foreboding title, you can probably surmise that the Scarecrow will play a huge role, no doubt confounding Jim Gordon and the rest of the GCPD at every turn.

Had you tuned in last night, then you’d have seen Charlie Tahan return as a young Jonathan Crane, effectively reprising his role from season 1....